JPH0524105U - Rolling equipment - Google Patents

Abstract

(57) [Summary] [Purpose] After rolling material is heated by electric current, it is rolled. [Arrangement] An energizing roller 6 that heats the rolling material 2 by energizing is provided in front of the rolling material 2 on the inlet side of the rolling roller 1, and the rolling material 2 is heated and softened to the inside by energization from the energizing roller 6. After that, the rolling material 2 is rolled by the rolling roller 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rolling apparatus which is adapted to electrically heat a rolled material to roll it.

[0002]

[Prior Art]

 BACKGROUND ART When rolling a hard rolled material or a thick rolled material, a rolling apparatus has been conventionally used that heats the rolled material by rolling a current of about 10,000 to 20,000 amperes to the rolled material.

An example of such a conventional rolling apparatus will be described with reference to FIG. 3. 1, 1 is a rolling roller, and the rolling material 2 is fed from the right side of FIG. 3 to between the rolling rollers 1, 1. It is designed to be rolled.

Reference numeral 3 is a power supply, and 4 is a control device for controlling the current from the power supply 3 to supply a current of 10,000 to 20,000 amperes. The current supplied from the control device 4 is the rolling roller 1 The rolling material 1 is energized by the rolling rollers 1, 1 through the slip ring 5 attached to the roller shafts 1, 2, 1 to heat the rolling material 2 for warm rolling.

[0005]

[Problems to be solved by the device]

 The rolling material 2 is heated and softened by an electric current passing through the rolling material 2, and even a hard rolling material 2 or a thick rolling material 2 can be rolled without requiring an excessive rolling force. When the rolling material 2 is heated, the surface of the rolling material 2 is first softened by heating, and then the inside is gradually softened by heating.

Therefore, when the rolling material 2 passes between the rolling rollers 1 and 1, the rolling material 2 energized by the rolling rollers 1 and 1 does not reach the inside by heating and softening, There was a case where it could not be uniformly or sufficiently rolled.

An object of the present invention is to provide a rolling apparatus which is capable of improving such conventional drawbacks and heating and softening the inside of a rolled material.

[0008]

[Means for Solving the Problems]

 The present invention relates to a rolling apparatus characterized in that an energizing roller for heating the rolled material by energizing is provided in front of the rolling material inlet side of the rolling roller.

[0009]

[Action]

 The rolled material is electrically heated by an energizing roller in front of the entrance of the rolling roller, and then rolled by a rolling roller.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of an embodiment of the present invention. 1, 1 is a rolling roller, 2 is a rolling material, 3 is a power source, and 4 is a current from the power source 3 to control 10,000 amperes. Is a control device that supplies DC or AC current of 20,000 amps.

The rolling material 2 is fed from the right side of FIG. 1 between the rolling rollers 1 and 1 to be rolled, and a pair of energizing members is provided in front of the inlet side of the rolling rollers 1 and 1. Rollers 6 and 6 are provided so as to contact the rolled material 2 from above and below the rolled material 2. A current is supplied from the control device 4 to the energizing rollers 6 and 6.

Next, the operation of the apparatus shown in FIG. 1 will be described.

The rolling material 2 passes between the energizing rollers 6 and 6 before the rolling rollers 1 and 1, and then passes between the rolling rollers 1 and 1. When the rolling material 2 passes between the current-carrying rollers 6 and 6, a current 7 of about 10,000 to 20,000 amperes flows between the current-carrying rollers 6 and 6 through the rolling material 2 and the current 7 causes rolling. The material 2 is rolled while passing through between the rolling rollers 1 and 1 while being heated and softened to the inside.

FIG. 2 is a side view of another embodiment of the present invention, in which the same parts as those in FIG. 1 are designated by the same reference numerals.

In the embodiment shown in FIG. 2, a plurality of pairs of energizing rollers 6 are provided in front of the inlet sides of the rolling rollers 1 and 1, and a current is supplied from the control device 4 to each energizing roller 6. In addition, electric current is also supplied from the control device 4 to the rolling rollers 1 and 1 via the slip rings 5 and 5.

The rolling material 2 to be rolled by the apparatus of FIG. 2 passes between a plurality of pairs of energizing rollers 6, 6, ... Before the rolling rollers 1, 1 and is heated to the inside by an electric current flowing from the energizing roller 6. It softens and enters between the rolling rollers 1 and 1. When passing between the rolling rollers 1 and 1, a current 8 is passed through the rolling material 2 through the rolling rollers 1 and 1. Therefore, the rolled material 2 is heated and softened by the electric current 7 when passing between the current-carrying rollers 6, 6, ... And further maintained by the electric current 8 when being rolled between the rolling rollers 1, 1. Will be done.

[0018]

[Effect of the device]

 In the present invention, since the rolling material is heated by electric current before rolling, it is possible to heat and soften the inside of the rolling material. Therefore, even if it is a hard rolling material or a thick rolling material, it is efficient. It can be rolled.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of the present invention.

FIG. 2 is a side view of another embodiment of the present invention.

FIG. 3 is a side view of a conventional device.

[Explanation of symbols]

 1 Rolling roller 2 Rolling material 6 Roller for energization

Claims (1)

[Scope of utility model registration request] 1. In front of the rolling material inlet side of the rolling roller,
A rolling device comprising an energizing roller for heating a rolled material by energizing it.